You can use them for your Toploader Binder in order to give your Collection the matching Color Touch or as the special colorful Protection for your favorite Leader
In a deck where youre wheeling a lot and this can trip your wincons from the graveyard, it seems better
But even if they were three color to offer some diversity in play style, I think they would just get integrated into the established five color deck since, like Sliver Overlord, General Tazri is a tutor by herself
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